EP 0225083 B1 19930127 - LINE ACCESS APPARATUS FOR IN-BAND COMMUNICATION
Title (en)
LINE ACCESS APPARATUS FOR IN-BAND COMMUNICATION
Publication
Application
Priority
US 79952185 A 19851119
Abstract (en)
[origin: EP0225083A2] Line access apparatus (10) for in-band communication includes a line coupler that functions as a high voltage isolation device and has a resonant frequency of the signal transmission band. A carrier signal of about the resonant frequency is modulated at an in-band frequency to convey information across the line coupler. The apparatus comprises a plug (18) adapted to be inserted between the main distribution frame (42) and a plurality of high voltage protector blocks. The plug includes a plurality of pins (20) of which each pair is intended to bridge a respective line pair. With the pins (20) are associated piezoelectric devices (24) each serving as both a voltage-isolating device and a signal coupler.
IPC 1-7
IPC 8 full level
H04M 3/00 (2006.01); H04M 11/00 (2006.01); H04M 11/06 (2006.01); H04Q 1/18 (2006.01); H04Q 3/42 (2006.01); H04M 3/18 (2006.01); H04Q 1/14 (2006.01)
CPC (source: EP US)
H04M 3/005 (2013.01 - EP US); H04M 3/007 (2013.01 - EP US); H04M 11/062 (2013.01 - EP US); H04M 3/18 (2013.01 - EP US); H04Q 1/14 (2013.01 - EP US)
Designated contracting state (EPC)
ES FR GB
DOCDB simple family (publication)
EP 0225083 A2 19870610; EP 0225083 A3 19880810; EP 0225083 B1 19930127; ES 2040212 T3 19931016; JP H0458220 B2 19920916; JP S62120770 A 19870602; US 4750170 A 19880607
DOCDB simple family (application)
EP 86308798 A 19861112; ES 86308798 T 19861112; JP 27422886 A 19861119; US 79952185 A 19851119